Key Features:
Aperture Range: f/1.8 to f/16
17 elements in 11 groups
Minimum Focus Distance: 28cm
Rounded 11-Blade Diaphragm
Dust and Splash-Proof Structure
Water- and oil-repellent coating
Filer Size: 67mm
Weight: 535g

Building on the legacy of the revolutionary Sigma 18-35mm F1.8 DC HSM |
Art, the new Sigma 17-40mm F1.8 DC | Art takes large aperture zoom
performance to the next level. Thirteen years after Sigma transformed
the industry with the world's first F1.8 zoom lens, this next-generation
model expands the creative possibilities with a broader 17-40mm focal
range, while shedding over 30% of its weight. The result is a fast,
versatile, and remarkably portable zoom lens ideal for both stills and
video.

Unmatched Optical Performance
Crafted with Sigma's most advanced design and production techniques,
including precision-moulded aspherical elements, the lens delivers
exceptional image quality across the frame. The optical construction
prioritises the correction of axial chromatic aberration and sagittal
coma flare, ensuring sharp, high-resolution results even when shooting
wide open at F1.8. From finely rendered textures to beautifully smooth
bokeh, every image is infused with clarity and depth.

Constant F1.8 Aperture Across the Zoom Range 

Enjoy the flexibility of a zoom with the expressive power of a prime.
The constant F1.8 aperture not only delivers superb low-light
performance but also enables stunning subject separation and background
blur, perfect for night scenes, indoor environments, and artistic
portraits.

Expanded Zoom Range for Greater Creative Control
Offering a 17-40mm focal length (equivalent to 25.5-60mm in 35mm
format), this lens covers a versatile range - from wide-angle landscapes
and interiors to natural-looking portraits. Whether you're capturing
immersive video footage or dynamic stills, the ability to reframe
without swapping lenses is a game-changer for creators on the move.

With fast, quiet autofocus driven by Sigma's HLA (High-response Linear
Actuator), minimal focus breathing, and a stable inner zoom mechanism,
this lens is optimised for both video and photography. Its constant
physical length during zoom and focus ensures excellent balance when
mounted on gimbals or tripods, and enhances usability in run-and-gun
scenarios.

Advanced Coatings and Durable Construction
Engineered for real-world shooting conditions, the 17-40mm F1.8 DC | Art
features Sigma's Super Multi-Layer Coating to suppress flare and
ghosting, maintaining contrast and colour accuracy even in challenging
light. The lens is built with a dust- and splash-resistant structure,
and its front element is treated with a water- and oil-repellent coating
- ideal for outdoor use in unpredictable weather.

Compact, Lightweight, and Travel-Ready
Despite its large aperture and expanded zoom range, the lens is
impressively compact, with a smaller 67mm filter diameter and reduced
weight compared to its predecessor. Paired with an APS-C camera, it
makes for a powerful yet portable setup that suits everyday photography,
travel, and mobile video production alike.

What's in the box?
17-40mm Lens 
Lens Hood 
Front Cap
Rear Cap